Hi parduelay! Welcome to the Berk family! We also have a 38A.
Our water heater did the same thing last week while we were boon-docking. It may or may not have had anything to do with it, but.... while spraying hair spray in the half bath the CO2 sensor alarm went off. Then we had no hot water. Rick had to go outside and take the water heater door off and press the reset button in the upper left corner. It worked ok after that. (it might be some kind of built in safety trigger shut down).
Good luck and keep up posted,
Rick and Karen
2016 Berkshire 38A
2011 Honda CR-V toad FB